AU732133B2 - Machine for varnishing easy-to-open covers - Google Patents

Machine for varnishing easy-to-open covers Download PDF

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Publication number
AU732133B2
AU732133B2 AU42097/97A AU4209797A AU732133B2 AU 732133 B2 AU732133 B2 AU 732133B2 AU 42097/97 A AU42097/97 A AU 42097/97A AU 4209797 A AU4209797 A AU 4209797A AU 732133 B2 AU732133 B2 AU 732133B2
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AU
Australia
Prior art keywords
shaft
machine
lids
lid
varnishing
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Ceased
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AU42097/97A
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AU4209797A (en
Inventor
Jose Penalver Garcia
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • B05C5/0216—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles by relative movement of article and outlet according to a predetermined path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/46—Placing sealings or sealing material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Spray Control Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Sealing Of Jars (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A simple or double head applies varnish to the covers in a circular motion and conical projection with adjustable height by means of a varnishing gun which can be provided with an additional separator of variable thickness according to the covers; it also comprises a cover conveyor device provided with another motor, an intermittent rotation box at the outlet, and a supply box which actuates a cover positioning device and a dosing blade which collects, separates and inserts the covers in a groove of the positioning device for their supply to the conveyor device. <IMAGE>

Description

1 MACHINE FOR VARNISHING EASY-TO-OPEN COVERS
DESCRIPTION
OBJECT OF THE INVENTION The invention proposed consists of a machine for varnishing easy-to-open covers or lids, characterised by having a single or double revolving revarnishing head and a lid transporting device.
The machine is provided with a single or double rotating motorised revarnishing head which applies varnish to the lids with a circular motion, with a conical varnish projection of adjustable height, by a revarnishing gun either with or without an additional separator of a thickness adjustable depending on the diameter of the lid to be varnished.
The lid transporting device in the baseplate of the revarnisher is complemented by a drive chain at the base of the lid feeder which has an engine connected to a intermittent wheel race which provides four starts and four stops in each turn of the engine outlet shaft, the lids being varnished one at a time during the stops.
S 15 Also object of the invention is a can feeder located in relation to the storage tower where the cans are gathered.
BACKGROUND OF THE INVENTION Lid revarnishing machines are well known and widely used, the applicant having several patents related to devices incorporated to this type of machines.
20 After continuous use, this type of revarnishing machines present the problem of an uneven width of the varnish band, producing surface finishes which may generate rejections and in any case force the manufacturer to control production frequently.
:Different solutions have been attempted, without obtaining industrially viable results so far, due to the uneven distribution of the varnish.
The applicant is not aware of revarnishers for easy opening lids which are provided with two sided, single or double revarnishing heads as well as conveyors of the type described in the present application.
DESCRIPTION OF THE INVENTION The invention object of the present invention relates to a revarnishing machine for easy opening lids with a revolving revarnishing head, single or double, and a lid transporting device.
The head basically consists of a rotary bushing driven by an above toothed pulley provided with a belt which connects with their pulleys, one of which is coupled to an electric drive motor from Swhich the rotation is transmitted to the bushing by said belt, and by a shaft fitted inside said bushing; having a pneumatic revarnishing gun, with or without an additional separator which can be laterally adapted to the shaft, of a variable thickness depending on the size of the lid to be varnished, and conical bearings which absorb the axial and radial loads of the rotating head.
The bushing will revolve with the shaft, turning the gun included in a recess of the bushing.
As the gun turns it undergoes a circular motion which applies the varnish to the lid as a cone of adjustable height.
A three step revolving joint coupled above the head, related to the head, incorporates the varnish and air inlets of the pneumatic gun.
In addition, the revarnisher is provided with a lid transportation device with an electric motor, connected by toothed pulleys and a belt to an intermittent wheel race, starting and stopping, provided with two shafts, one at the inlet and one at the outlet, the first shaft revolving continuously, together with the motor, and the latter turning intermittently by a cam-follower mechanism which causes starts and stops to varnish the lids one at a time during the stops.
~A set of gears and a link chain also transmit the movement of the motor to a lid feeder.
The lid feeder is located with relation to the lid storage tower, to place the lids on the S transportation device.
The lid feeder, through a pair of helical gears placed on two perpendicular shafts, drives the shaft of a lid positioner and a discoidal dosing blade located above the positioner.
The dosing blade has peripheral flaps to receive the outer edge of the lid and inclined 20 peripheral flaps which make the lid descend after the blade turns, directing the lids towards the lid positioner located immediately below for their separation.
The lid positioner has helical grooves which as they turn direct the outer edge of the lid towards the transporting device.
The positioner shaft has a torque limiter associated to a spring which generates a signal received by a sensor when the positioner becomes blocked, causing the automatic stoppage of the machine.
The transportation device moves the lids on conveyor belt with equidistant pull flaps and receives the intermittent motion, with starts and stops, of the wheel race outlet shaft by a set of gears.
DESCRIPTION OF THE DRAWINGS Preferred embodiments of the invention are described below with reference to the accompanying drawings in which:- Figure 1 shows a partial cross section elevation of the revarnisher, on the revarnishing head side, in single construction.
Figure 2 is a horizontal cross section of the simple revarnishing head.
Figure 3 shows a partial cross section elevation of the revarnishing head in double construction.
Figure 4 is a horizontal cross section of this same head in double construction.
Figure 5 is a side elevation sketch of the revarnisher with an enlargement of the lid positioner and the blade.
Figure 6 is the opposite side elevation sketch of the revarnisher.
Figure 7 is a plan of the baseplate with a cross section of the single revarnishing head.
Figure 8 is an enlargement of the revarnishing process with three different views, an elevation with an enlargement and a plan of a cross section of the baseplate with a lid.
PREFERRED EMBODIMENT OF THE INVENTION In view of the above, the present invention relates to a revarnishing machine for easy 0 opening lids, among the revarnishing machines which use varnish projection nozzles, characterised in that it is provided with a single or double revolving revarnishing head and a lid transportation device.
The lid revarnishing revolving head is characterised in that it applies varnish to the lids on the circular incision of diameter between 52.5 and 99 mm.
The revolving head is mounted on a fixed support to the revarnishing bench and to which is joined another circular support on the upper part of which is an electric motor to which is connected a toothed pulley (16) by a conical bushing with support open in front to facilitate transmission by a toothed belt to the other pulleys.
Toothed pulley (16) is engaged by a toothed belt (17) to a pulley (13) and to a tensor pulley (14) provided with bearings Tensor pulley (14) is coupled to a conventional tensor (19) and attached to support of the head by a shaft or a bolt, belt (17) also being engaged to pulley which transmits the motion to a slip on which is a revolving shaft slip having an opening in its lower front area to house the pneumatic revarnishing gun which is laterally connected to the lower end of shaft with the interposition of an additional separator (11) of an adjustable size, depending on the diameter of the lid (12) to be varnished.
Additional separator (11) moves gun (10) with respect to its rotation axis, being applicable preferably to types of lid (12) with diameters of 65.00, 73.15, 83.00, and 99.00 mm, or without Sseparator (11) for lids of diameter 52.5 mm.
Slip is mounted on two conical roller bearings which absorb all axial and radial loads produced during operation of the revolving head, roller bearings being tightly fitted so that as slip turns with respect to the inner race of the roller bearing, shaft turns with it, so that the revarnishing gun (10) describes a circular motion.
Gun (10) is provided with a thin nozzle (24) for applying the varnish to lid with the varnish being projected from the nozzle (24) in a manner which describes the outer surface of a cone. Means are provided for adjusting the height of gun (10) with respect to bench (23) between an upper and lower heights by a screw inserted in a drill which is placed in the lower end of the shaft so that when screw is turned the shaft is displaced downwards with the consequent displacement of gun (10) while, in the opposite sense, gun (10) is separated with respect to the surface of baseplate (23).
A cover and a joint located on the lower face of slip seal the inside of the head and avoid accumulation of the spray produced in varnishing.
A screw (18) connects slip to one of the conical roller bearings 15 A three stage revolving joint coupled to the stop of the inner shaft of head is provided with two orifices for inlet and return of varnish and another for air inlet for the pneumatic gun this joint being formed by three bodies, two upper fixed bodies and a lower mobile body, which turns together with the inner shaft of head The other device characteristic of this invention is the lid conveyor on the baseplate of the 20 revarnisher, complemented by a drive chain to the lid feeder.
A second electric motor (25) is coupled to a toothed pulley (26) which is connected by a toothed belt (27) to another pulley (28) located in the inlet axis of an intermittent wheel race, which starts and stops, and which has two shafts (51) located in opposite faces and at different heights, an inlet shaft (50) and an outlet shaft (51).
Inlet shaft (50) turns continuously while outlet shaft (51) moves intermittently by virtue of a cam-follower device incorporated in wheel race (29) so that in each revolution of the inlet shaft outlet shaft (51) starts and stops once, turning 1/4 of a revolution, facilitating varnishing of the lids one at a time.
A double crown gear (30) coupled to inlet shaft (50) of wheel race transmits the first motion through a pair of links to another gear located on a distributor shaft which is coupled to a gear (31) which, through a link chain transmits the motion to another double crown gear (34).
In this way gear (31) transmits the motion to the larger crown (34.1) while the crown with fewer teeth (34.2) connected to it turns, passing the motion through drive chain (35) to the lid feeder to a single crown gear (36) located on the shaft of the feeder box (37).
Feeder box (37) drives a shaft (38) connected to a lid positioner (39) and a dosing blade (40) placed on top, both in the shape of a disc, positioner (39) being provided with two helical channel grooves (52) located on its side at 1800, while blade (40) has a constant thickness along the surface, except in four sections, where there are peripheral flaps (53) of variable thickness.
Flaps two inlet and two outlet, of blade (40) collect and separate lids (12) from the feeding tower inserting them below into one of the channel grooves (52) of positioner (39).
The motion of lid positioner (39) and dosing blade (40) is received from a pair of helical contact gears placed on two perpendicular axes, on the feeder box shaft and on shaft (38).
Shaft (38) is provided with a torque limiter (43) on which acts a spring so that when positioner (43) is blocked limiter (43) moves from its natural position and an inductive sensor which acts by proximity generates a signal and automatically stops the machine.
The lid conveyor is located in the geometrical centre of lid (12) revarnishing baseplate (23) and moves these lids by a transporting link chain (46) placed on a central groove (46.1) which is provided with pull flaps (47) for lids (12) placed equidistant from each other along the drive and receiving an intermittent, start-stop motion in the outlet shaft (51) of the wheel race (29) by a double crown drive gear (48) complemented by two other gears (49) and (42) located on the ends of the 20 conveyor, together with a second double crown gear (21) placed next to the first double crown drive gear one of which double crown drive gears act as a tensor gear, the set of gears and conveyor chain (46) forming a loop around the outlet shaft (51) of intermittent wheel race (29).
The description is not extended in the understanding that any expert in the matter would -have enough information to understand the scope of this invention and the advantages derived thereof, as well as to be able to reproduce it.
It is understood that, as far as they do not change the essence of the invention, variations in materials, shape, size and arrangement of the elements are subject to variation within the same characterisation.
The terms used in the description and its meaning must always be taken in a non limiting manner.

Claims (16)

1. A machine for varnishing easy-to-use open lids of the type using varnish projection nozzles, a single or double revolving revarnishing head and a lid transporting device, characterised in that it is provided with a revarnishing gun with or without an additional separator (11) of variable thickness depending on the size of lid which applies the varnish to the lids in a circular motion on the diameter of the incision and conical projection of adjustable height, also provided with a lid transporting device with a motor (25) connected to an intermittent wheel race (29) whose outlet shaft (51) provides an intermittent motion to a conveyor chain (46) with pull flaps (47) to varnish lids (12) one at a time, complemented by a drive chain (35) associated to a feeder box (37) which drives a shaft (38) of a lid positioner (39) and a dosing blade (40) which collects and separates the lids arriving from a feeder tower (41) and inserts them in a groove of the positioner (39) which supplies them to the lid transporting device.
S2. A machine for varnishing easy-to-open lids as claimed in claim 1, characterised in that the revolving head is coupled to a support joined to the revarnishing bench and on which is coupled another circular support on the upper part of which is an electric motor which is joined to a toothed pulley (16) by a conical bushing the front face of support being open in order to facilitate the toothed belt transmission to other pulleys.
3. A machine for varnishing easy-to-open lids as claimed in either of claims 1 and 2, characterised in that the toothed pulley (16) is engaged through a toothed belt (17) to a pulley (13) :and a tensor pulley provided with bearings tensor pulley (14) being connected to a conventional tensor (19) and joined to head support by a shaft or bolt.
4. A machine for varnishing easy-to-open lids as claimed in any one of claims 1 to 3, characterised in that belt (17) engages pulley (15) which transmits the motion to a bushing with a revolving shaft bushing having an opening in its lower front part for the pneumatic revarnishing gun which is connected to the lower end of shaft with an interposed additional separator (11) of a variable thickness depending on the size of the lid (12) to be varnished.
A machine for varnishing easy-to-open lids as claimed in any one of claims 1 to 4, characterised in that bushing is mounted on two conical roller bearings which absorb axial and radial loads, these bearings being tightly fitted with bushing mounted on their inner race with which turn the bushing and the shaft producing the circular motion of the revarnishing gun
6. A machine for varnishing easy-to-open lids as claimed in any one of claims 1 to characterised in that gun (10) is provided with a thin orifice nozzle (24) for applying the varnish on the lid the varnish projection following a conical geometry, incorporating a screw in a drill on the lower part of shaft which adjusts theheight of gun (10) with respect to bench (23) between an upper and lower heights.
7. A machine for varnishing easy-to-open lids as claimed in any one of claims 1 to 6, eo.characterised in that it is provided with a cover and a joint on the bottom face of bushing (2) which seal the inside of the head.
8. A machine for varnishing easy-to-open lids as claimed in any one of claims 1 to 7, characterised in that it is provided with a screw (18) which connects bushing to one of the conical roller bearings o.e. g a
9. A machine for varnishing easy-to-open lids as claimed in any one of claims 1 to 8, characterised in that it incorporates a three stage revolving joint connected to head shaft with two orifices for inlet and outlet of the varnish and another for air for gun this joint being formed by three bodies, two upper fixed bodies and a lower mobile body which turns with the inner shaft of the head, while the connections for varnish and air are made in the two fixed bodies.
A machine for varnishing easy-to-open lids as claimed in claim 1, characterised in that the lid transporting device on the revarnisher baseplate has a second electric motor (25) coupled to a toothed pulley (26) which in turn is connected through a toothed belt (27) to another pulley (28) located in the inlet shaft of an intermittent wheel race (29) which starts and stops, with an inlet shaft and an outlet shaft (51) located in opposite faces and at different heights. 8
11. A machine for varnishing easy-to-open lids as claimed in either of claims 1 and characterised in that the intermittent wheel race is provided with a cam-follower mechanism which transforms the motion of the inlet shaft (50) into the intermittent motion of the outlet shaft (51) to facilitate varnishing the lids one at a time.
12. A machine for varnishing easy-to-open lids as claimed in any one of claims 1, 10 or 11, characterised in that it is provided with a double crown gear (30) coupled to the inlet shaft (50) of wheel race (29) through a link chain which transmits the first motion to another gear located on a distributor shaft (32) coupled to a gear (31) which transmits the motion through a link chain (33) to another double crown gear (34).
13. A machine for varnishing easy-to-open lids as claimed in any one of claims 1 and 10 to 12, characterised in that is provided with a chain which transmits the motion of gear (31) to a larger crown (34.1) which is connected to a crown (34.2) with fewer teeth, on which engages the lid feeder chain and also a single crown gear (36) located on the shaft of the feeder box (37).
14. A machine for varnishing easy-to-open lids as claimed in any one of claims 1 and 10 to 13, characterised in that the feeder box (37) drives a shaft (38) where a lid positioner (39) and an above dosing blade (40) are connected, both in disc form, positioner (39) having two helical grooves (52) on the side at 1800, while blade (40) has constant thickness along the surface, except in four sections where it is provided with peripheral flaps (53) of variable thickness, two inlet and two outlet which collect and separate lids (12) arriving from the feeder tower (41) and insert them in one of the grooves (52) of the positioner.
A machine for varnishing easy-to-open lids as claimed in any one of claims 1 and 10 to 14, characterised in that shaft (38) has a torque limiter (43) upon which acts a spring (44) which is released when positioner (39) is blocked, also incorporating a sensor (45) which detects the release of spring (44) and generates a signal to stop the machine.
16. A machine for varnishing easy-to-open lids as claimed in any one of claims 1 and 10 to characterised in that the lid transporting device is located in the geometrical centre of the lid revarnishing baseplate (23) and moves these with a conveyor link chain (46) placed on a central groove (46.1) which has attached pull flaps (47) for lids placed equidistant to each other along the transmission, and which receives a start and stop intermittent motion in the outlet shaft of wheel race (29) by a double crown drive gear complemented by two more gears (49) and (42) located on the ends of the conveyor, together with a second double crown drive gear located next to the drive gear one of said double crown drive gears acting as tensor gear, the set of gears and conveyor chain (46) forming a loop around the rotation axis of wheel race (29). DATED this 1 7 th day of January, 2001 JOSE PENALVER GARCIA 00 WATERMARK PATENT TRADEMARK ATTORNEYS 290 BURWOOD ROAD HAWTHORN VICTORIA 3122 AUSTRALIA P7197AU00 IAS:RBP:JC 0 0
AU42097/97A 1997-07-21 1997-09-12 Machine for varnishing easy-to-open covers Ceased AU732133B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ES009701621A ES2156465B1 (en) 1997-07-21 1997-07-21 EASY OPENING COVER REBARNIZING MACHINE.
ESP9701621 1997-07-21
PCT/ES1997/000225 WO1999004905A2 (en) 1997-07-21 1997-09-12 Machine for varnishing easy-to-open covers

Publications (2)

Publication Number Publication Date
AU4209797A AU4209797A (en) 1999-02-16
AU732133B2 true AU732133B2 (en) 2001-04-12

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Application Number Title Priority Date Filing Date
AU42097/97A Ceased AU732133B2 (en) 1997-07-21 1997-09-12 Machine for varnishing easy-to-open covers

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Country Link
US (1) US6165266A (en)
EP (1) EP0933134B2 (en)
KR (1) KR100344070B1 (en)
CN (1) CN1101279C (en)
AT (1) ATE242058T1 (en)
AU (1) AU732133B2 (en)
DE (1) DE69722643T3 (en)
DK (1) DK0933134T4 (en)
ES (1) ES2156465B1 (en)
PT (1) PT933134E (en)
WO (1) WO1999004905A2 (en)

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EP0933134B2 (en) 2009-08-12
WO1999004905A2 (en) 1999-02-04
EP0933134B1 (en) 2003-06-04
CN1101279C (en) 2003-02-12
ATE242058T1 (en) 2003-06-15
DE69722643D1 (en) 2003-07-10
PT933134E (en) 2003-09-30
DK0933134T4 (en) 2009-12-07
WO1999004905A3 (en) 1999-05-27
KR20000068603A (en) 2000-11-25
DE69722643T2 (en) 2004-04-29
DK0933134T3 (en) 2003-09-29
US6165266A (en) 2000-12-26
EP0933134A2 (en) 1999-08-04
ES2156465A1 (en) 2001-06-16
AU4209797A (en) 1999-02-16
CN1232414A (en) 1999-10-20
ES2156465B1 (en) 2002-01-16
DE69722643T3 (en) 2010-01-14
KR100344070B1 (en) 2002-07-24

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